﻿using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data.SqlClient;
using myproject.method;
using System.Security.Cryptography;

namespace supermarket.method
{
    internal class Classemp
    {
        SqlConnection con = new SqlConnection();
        SqlCommand cmd = new SqlCommand();
        SqlDataReader qlddr = null;  //数据缓冲区

    }
}
